Section 250.531 - When does my casing pressure request approval become invalid?A casing pressure request becomes invalid when:
(a) The casing or riser pressure increases by 200 psig over the approved casing pressure request pressure;(b) The approved term ends;(c) The well is worked-over, side-tracked, redrilled, recompleted, or acid stimulated;(d) A different casing or riser on the same well requires a casing pressure request; or(e) A well has more than one casing operating under a casing pressure request and one of the casing pressure requests become invalid, then all casing pressure requests for that well become invalid. 76 FR 64462 , Oct. 18, 2011. Redesignated at 77 FR 50894 , Aug. 22, 2012